#include <iostream>
#include <fstream>
#include <set>
using namespace std;
ifstream in("heapuri.in");
ofstream out("heapuri.out");
multiset<int>heap;
int n, poz[10000001],k,a,x;
int main()
{
in>>n;
for(int i=1;i<=n;i++){
        int q;
    in>>q;
    if(q==1){
        int elem;
        in>>elem;
        heap.insert(elem);
        poz[++k]=elem;

    }
    if(q==2){
            int x;
        in>>x;
        heap.erase(poz[x]);

    }

   if(q==3) out<<*heap.begin()<<'\n';

}
    return 0;
}